.slider {
    margin-top: 30px;
    margin-bottom: 40px;

    .l {
        float: left;
        width: 770px;
        height: 320px;
        .carousel_item {
            border-radius: 5px;
            overflow: hidden;
            .img {
                height: 100%;
            }
        }
    }
    .r {
        float: right;
        width: 320px;

        .ad1 {
            width: 320px;
            height: 210px;
            border-radius: 4px;
            overflow: hidden;
            margin-bottom: 10px;
            img {
                height: 100%;
            }
        }
        .ad2 {
            width: 320px;
            height: 100px;
            border-radius: 4px;
            overflow: hidden;
            img {
                height: 100%;
            }
        }
    }
}
